The experimental conditions of supercritical carbon dioxide (scCO2) extraction of virgin palm oil (VPO) from oil palm mesocarp fiber (OPMF) were optimized using the Response Surface Methodology (RSM). Results showed that a maximum of 28.68 % of VPO extraction was obtained at the optimal experimental conditions of scCO2 extraction: pressure of 31 MPa, temperature of 340 K, and extraction time of 80 min. The second-order rate equation, Arrhenius equation and Eyring theory were employed to assess the kinetics behaviour, activation energy and thermodynamics behaviour of scCO2 extraction of VPO from oil palm mesocarp fiber. The lower activation energy value (12.17 kJ/mol) of scCO2 for the extraction of VPO from OPMF indicates that the scCO2 extraction technology is less dependent on temperature during the extraction of VPO from OPMF. The physicochemical properties and fatty acids compositions analyses reveal that the scCO2 extracted VPO contains high carotenoids content (982 μg/g), low free fatty acids content (0.31 wt%), higher oxidative stability and higher unsaturated fatty acids content.

中文翻译：

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超临界 CO2 作为富含类胡萝卜素的原生棕榈油生产的绿色技术：工艺优化、动力学和热力学建模


采用响应面法 （RSM） 优化了从油棕中果皮纤维 （OPMF） 中提取超临界二氧化碳 （scCO2） 提取原生棕榈油 （VPO） 的实验条件。结果表明，在 scCO2 萃取的最佳实验条件下：压力 31 MPa、温度 340 K、萃取时间 80 min，VPO 萃取率最高为 28.68%。采用二阶速率方程、Arrhenius 方程和 Eyring 理论评估了从油棕中果皮纤维中 scCO2 提取 VPO 的动力学行为、活化能和热力学行为。从 OPMF 中提取 VPO 的 scCO2 活化能值较低 （12.17 kJ/mol） 表明 scCO2 提取技术在从 OPMF 中提取 VPO 时对温度的依赖性较小。理化性质和脂肪酸组成分析表明，scCO2 提取的 VPO 含有高类胡萝卜素含量 （982 μg/g）、低游离脂肪酸含量 （0.31 wt%）、较高的氧化稳定性和较高的不饱和脂肪酸含量。